523503245 has 4 divisors (see below), whose sum is σ = 628203900. Its totient is φ = 418802592.

The previous prime is 523503241. The next prime is 523503247. The reversal of 523503245 is 542305325.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 120055849 + 403447396 = 10957^2 + 20086^2 .

It is a cyclic number.

It is not a de Polignac number, because 523503245 - 2² = 523503241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523503241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52350320 + ... + 52350329.

It is an arithmetic number, because the mean of its divisors is an integer number (157050975).

Almost surely, 2^523503245 is an apocalyptic number.

It is an amenable number.

523503245 is a deficient number, since it is larger than the sum of its proper divisors (104700655).

523503245 is a wasteful number, since it uses less digits than its factorization.

523503245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104700654.

The product of its (nonzero) digits is 18000, while the sum is 29.

The square root of 523503245 is about 22880.1932902675. The cubic root of 523503245 is about 805.9469560373.

The spelling of 523503245 in words is "five hundred twenty-three million, five hundred three thousand, two hundred forty-five".